Hook



Nov. I 30 1926 c. R. .ZUVER HOOK Filed Jan. 5, 1926 athnmqo.

rods are detached from the plant and connected to the anchor posts.

Patented Nov. 30, 1926.

unis sra'rss CLYDE nonanr'zuvnn, or BAKERSFIELD, CALIFORNIA.

HOOK.

Application filed January 5, 1926. Serial No. 79,501.

The present invention has for its general object to provide a means for improving the general construction of hooks adapted for use in connecting the links of a jack plant line to the pulling elements oi a plurality of reciprocating pumps arranged for pumping oil, water or the like from wells.

The meansproposed by the present invention is adapted for maintaining a straight line of pull betweenthe, detachably connected links and pull rods when thepumps are operating, and also between the pull rods and the links of anchor posts when the pull line oit' the jack A still further object of the inventionis to prevent bending of the pull rod cables at their points of connections with the hooks in the operation of detaching the hooks from the links of the line or the links of the anchor posts, it being well knownthat frequent bending of the pull lines at the aforesaid points results in early breakage of the lines.

A still further object of the invention is to provide for the elimination of a jerk on the pull rod in the operation of disconnecting the rod from the anchor post to the link of the jack plant. 7

The above and other objects are accomplished by instrumentalities pointed out in the following specification.

The invention is clearly defined in the claims.

A satisfactory embodiment of the invention is illustrated in the accompanying drawings, forming part of the specification and in which Figure 1 is a side elevation or" the device in use. p

Figure 2 is a detail partly in side elevation and longitudinal section onan enlarged scale showing the construction of the shank.

Figure 3 is a plan view of FigureQ.

Figure 4 a view similar to Figure 1, but on a slightly reduced scale and showing the hook engaged with the link of an anchor post, H

is a view siiniiar to Figure 4, .nc showing the hook immediately after it automatically disengaged itself from he anchor post link and when it is engaged W the link of the jack plant.

The hook oi the present invention is designated generally by a and is formed of metal throughout. One end portion of the shank 5 is oblong and provided with an axial bore or socket 6 for the reception of one end of the flexible pull rod section 7. The wall 8 of bore 6 tapers outwardly, as shown in Figures 2 and 3, the narrow end of the bore being of a size to somewhat loosely receive the end portion of pull rod 7 which is prevented from displacement when suitable softrnetal is packed around the pull rod and in the tapered space between the pull rod and'the wall 8 of the bore. The end of the shank inwardly beyond the bore 6 may be enlarged laterally and made somewhat flat so as to provid a head 9. it recess 10 extends inwardly from the outer end vor head 9 for the reception of the circular base portion 11 of the bill Z).

A pivot pin 12 passes through alining trans verse openings in the opposite side walls of recess 10 and through a centrally disposed opening in the base 11. A head 13 at one end of the pin, and a suitable fastening device, such as a cotter pin 14 passing through the projecting end portion of the pivot pin beyond the head, serve to prevent accidental displacement of the pivot pin 1:2. The base 1.1 is integrally formed with a radially disposed "r shaped extension, the stem of which is indicated by 15 and the cross piece by 16. The inner sides of the opposite end portions of the cross piece 16 are undercut on circular lines which merge into the periphery of the base 11 so that substantially semi-circular shaped sockets 17 are provided. The stem 15, together with the cross piece 16 and the socket 17 form a double hill 6.

lVhen the hook is connected to the pull rod 7, as shown in Figure 1, and the pull rod connected to one of the links 18 of a jack plant, or to the link 19 of an anchor post, as

shownin n igure 1,, the bills are disposed one above the other, the upper bill being designated by 20 and the lower bill by 21.

As shown 1n Figure 1, when the upper bill 20 is engaged with a link 18 of a jack plant, the end portion of link 18 fits nicely within the upper socket 1?. Pull upon the parts causes the hill 5 to tilt so that the link 18 and pull rod 7 are in axial alinelnent. This alinenient is preserved throughout the time that the parts are connected and while they are reciprocated through the action of the jack plant upon the link 18.

In the operation of the device and when several pumps are operated by a single jack plant, the cable which is operated by the wheel of the jack plant, not shown, is reciproeated in the ordinary manner. This cable, of course, has a number of links 18 corresponding to the number of pumps to be operated. In the case where the device is used in connection with the pumps of an oil field, suitable anchor posts 22 are ar ranged adjacent to the links 20 ot the jack plant, the arrangement being such that the links 20 in reciprocating move for substantially equal distances across the outer ends of the links 19 forming part or: the anchor posts. When occasion requires to discontinue the operation of any pump and with the parts arranged as shown in Figure 1, the link 19 of the adjacent anchor post is moved upwardly and engaged with the lower bill 21, during the time that the pump rod is moving away from the link 19 of the anchor post. lVhe tl c said link of the anchor post checks the movement of the pull rod '4, the bill Z) turns upon its pivot and the continued movement oi" the link 18 of the jack plant in a direction away from the anchor post results in disengaging the link 18 from the upper bill 20 so that the said link 18 may be readily removed by lifting it from the upper recess 17.

As will be noted in Figure l, the turning of the bill I) when enga ed with the link 19 oi the anchor post causes alinement to be had between the said link and the pull rod 7, so that a straight pull is exerted through pull rod 7 ant the link of the anchor post.

In the operation of disengaging the pull rod from the anchor post and restoring the parts to the position shown in Figure 1, the link 18 is engaged with the upper bill 20 during the time that the said link is moving toward the anchor post. As the aovement of the link 18 continues toward he anchor post, the bill I) is turned on the pivot pin 11, but the lower bill 21 fulcrums on the link of the anchor post. In this way a sudden jerk is prevented when the pull is transferred from the lower bill 21 to the upper bill 20, the turning action oi the lower bill on the link of the anchor post bein gradual and causing a gradual take-up or the strain by the link oi the jack plant.

although I have sl own and described one embodiment'oli my i; is to be un derstood that tl same is susceptible of various changes; and l reserve the right to employ such as may come within the scope of the appended claims,

I claim:

1. In a jack plant, a hook on hook for disconnecting a flexible pull rod of a pumping device from the link of an anchor post and connecting the rod to a link of the reciprocating line of the jack plant and comprising a tubular shank having one end portion receiving one end of the pull rod and rigidly secured thereto, a base member pivotally connected to the opposite end of the shank and arranged for turning in a transverse direction with respect to the axis of the shank, said base member being intogrally provided with a substantially T- shaped lateral extension, the transverse portion of which is disposed substantially upright and having its terminals curved in wardly toward the shank and constituting upper and lower bills, the lowerot said bills being adapted to engage with the anchor post link and move upwardly in response to the pull of the pull rod and the link, the upper of said bills being adapted to engage with the link or" the reciprocating line when the same is manipulated and moving in direction away from the pull rod whereupon the said upper bill is turned downwardly and alinement etlected between the link of the reciprocating line and the pull rod.

2. A hook ot the class described comprising an oblong shank portion having in one end thereof an axial bore, a base member pivotally connected to the opposite end of the shank and arranged for turning in a transverse direction with respect to the axis of the shank, said base member being integrally provided with a substantially l shaped lateral extension, the terminals of the transve se portion of which are disposed on inward y curved lines and constitute oppositely disposed bills.

3. A hook of the class described comprising an oblong shank portion having in one end thereof an axial bore and further having in its opposite end portion a transverse recess, a base member disposed in the recess and pivotally connected to the shank and arranged for turning movement in a transverse direction with respect to the axis of the shank, said base being substantially circular in contour and integrally provided with a radial and substantially ii-shaped er;- tension, the terminals of the transverse portion of which curve inwardly toward the shank and constitute oppositely disposed bills. 

